package com.example.reggie.controller;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.OSSObject;
import com.example.reggie.common.R;
import org.apache.tomcat.util.http.fileupload.IOUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.UUID;

@RestController
@RequestMapping("/common")
public class CommonController {
    // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
    @Value("${aliyun.endpoint}")
    String endpoint;
    // 阿里云账号AccessKey拥有所有API的访问权限，
    // 风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。
    @Value("${aliyun.accessKeyId}")
    String accessKeyId;
    @Value("${aliyun.accessKeySecret}")
    String accessKeySecret;

    /*这是为上传*/
    @PostMapping("/upload")
    public R upload(@RequestBody MultipartFile file) throws IOException {
//        生成一大串数,为了防止id一模一样,给图片的名字
        UUID uuid = UUID.randomUUID();

//        获取原始文件昵称
        String originalFilename = file.getOriginalFilename();

        String[] split = originalFilename.split("\\.");
        String s =split[split.length-1];

        String name = uuid + "." + s;

/*        //判断文件夹是否存在，不存在则创建
        File file1 = new File("D:\\XUEXI\\ZUOYE\\reggie\\reggie\\src\\main\\resources\\imgs");
        if (!file1.exists()){
            file1.mkdirs();
        }
        file.transferTo(new File("D:\\XUEXI\\ZUOYE\\reggie\\reggie\\src\\main\\resources\\imgs",name));*/


        // 填写Bucket名称，例如examplebucket。
        String bucketName = "ruiji-zjc";
        // 填写Object完整路径，例如exampledir/exampleobject.txt。Object完整路径中不能包含Bucket名称。
        String objectName = "imgs/"+name;

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            String content = "Hello OSS";
            ossClient.putObject(bucketName, objectName, file.getInputStream());
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
        return R.success(name);
    }
    /*下载*/
    @GetMapping("/download")
    public void download(String name, HttpServletResponse response){
/*        try {
            FileInputStream fileInputStream = new FileInputStream(new File("D:\\XUEXI\\ZUOYE\\reggie\\reggie\\src\\main\\resources\\imgs",name));
            ServletOutputStream outputStream = response.getOutputStream();
            IOUtils.copy(fileInputStream,outputStream);
            fileInputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }*/

        // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
        String endpoint = "https://oss-cn-nanjing.aliyuncs.com";
        // 阿里云账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。
        String accessKeyId = "LTAI5tQmycndXmTTs75uK9e7";
        String accessKeySecret = "q31BsWURbd0httrhMebVdCy7ym1Zcc";
        // 填写Bucket名称，例如examplebucket。
        String bucketName = "ruiji-zjc";
        // 填写Object完整路径，例如exampledir/exampleobject.txt。Object完整路径中不能包含Bucket名称。
        String objectName = "imgs/"+name;

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // 调用ossClient.getObject返回一个OSSObject实例，该实例包含文件内容及文件元信息。
            OSSObject ossObject = ossClient.getObject(bucketName, objectName);
            // 调用ossObject.getObjectContent获取文件输入流，可读取此输入流获取其内容。
            InputStream content = ossObject.getObjectContent();

/*            if (content != null) {
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                while (true) {
                    String line = reader.readLine();
                    if (line == null) break;
                    System.out.println("\n" + line);
                }
                // 数据读取完成后，获取的流必须关闭，否则会造成连接泄漏，导致请求无连接可用，程序无法正常工作。
                content.close();

            }*/     ServletOutputStream outputStream = response.getOutputStream();
            IOUtils.copy(content,outputStream);
            content.close();

        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException | IOException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}
